"Gave someone the pink slip" is an idiomatic expression meaning to fire or dismiss an employee from their job. There are several synonyms that can be used to convey the same meaning, such as: 1. Terminated: This is a more formal and professional way of saying that someone has been fired. 2. Sacked: This term is typically used in British English and is similar to "fired" or "dismissed." 3. Let go: This phrase is often used to soften the blow of being fired or dismissed. 4. Discharged: This is a more formal way of saying that someone has been dismissed from their job. 5. Axed: This informal term is often used to refer to mass layoffs or job cuts.